#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	if(n>0){
		cout<<"+";
	}else{
		cout<<"-";
	}
}
/**************************************************************
	Problem: 1645
	User: wangyiyang
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/